{"id":27,"date":"2014-11-11T08:25:25","date_gmt":"2014-11-11T08:25:25","guid":{"rendered":"http:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/?page_id=27"},"modified":"2014-11-11T10:19:16","modified_gmt":"2014-11-11T10:19:16","slug":"weight-thrust-and-acceleration","status":"publish","type":"page","link":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/weight-thrust-and-acceleration\/","title":{"rendered":"Weight, Thrust and Acceleration"},"content":{"rendered":"

\"\"<\/a><\/p>\n

The Summary Notes section, including worked examples can be accessed by clicking here.<\/a><\/p>\n

1.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Find the missing values in the table.<\/p>\n

\"\"<\/a><\/p>\n

2.\u00a0\u00a0\u00a0 The engine of a space shuttle can produce a thrust of 600 000 N. The mass of the shuttle is 8 x 105<\/sup> kg. Calculate the acceleration of the shuttle in space.
\n3.\u00a0\u00a0\u00a0 What engine thrust must be produced by a rocket of mass 3 x 106<\/sup> kg in order to produce an acceleration of 1\u00b74 m\/s2<\/sup> in space.
\n4.\u00a0\u00a0\u00a0 The maximum engine thrust of a spacecraft is 2\u00b74 x 107<\/sup> N and this produces an acceleration of 12 m\/s2<\/sup> in space. What is the mass of the spacecraft?
\n5.\u00a0\u00a0\u00a0 An engine force of 160 kN is used to slow down a shuttle in space. If the mass of the shuttle is 120 000 kg what is its rate of deceleration?<\/p>\n

\"\"<\/a><\/p>\n

6.\u00a0\u00a0\u00a0 Use the three stages outlined in the example above to find the missing values in the following table. Assume that each mass is in the Earth\u2019s gravitational field.<\/p>\n

\"\"<\/a><\/p>\n

\"\"<\/a>7.\u00a0\u00a0\u00a0 A water rocket has a mass of 0\u00b78 kg and is launched in a school playground with an initial upwards thrust of 12 N.<\/p>\n

a) What is the weight of the water rocket in the playground?
\n(b) What is the initial acceleration of the rocket in the playground?
\n(c) If this water rocket were launched from the moon, what would be its initial acceleration?
\n(Remember to find the new weight first !)<\/p>\n

8.\u00a0\u00a0\u00a0 A rocket is launched from Earth with an initial acceleration of 2\u00b75 m\/s2<\/sup>. The mass of the rocket is 1 600 000 kg.<\/p>\n

\"\"<\/a>
\n\u00a0<\/p>\n

(a<\/em>)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Calculate the unbalanced force acting on the rocket during its launch
\n(b<\/em>)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 What is the weight of the rocket?
\n(c<\/em>)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Calculate the engine thrust of the rocket.
\n(d<\/em>)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0What engine thrust would be required to launch this rocket from the moon with the same acceleration?<\/p>\n

9.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Calculate the acceleration of the following objects.<\/p>\n

(a<\/em>)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 A model rocket of mass 30 kg\u00a0 being launched from Earth with an engine thrust of 800 N.
\n(b<\/em>)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 A satellite in space whose mass is 1 800 kg and whose engine force is 4\u00b768 kN.
\n(c<\/em>)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 A 100 000 kg shuttle travelling at 50 m\/s in space.
\n(d<\/em>)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 A toy rocket of mass 1\u00b75 kg whose engine stopped while the rocket was in mid air.
\n(e<\/em>)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0A spaceship of mass 4 x 107<\/sup> kg lifting off from Saturn with an engine thrust of 9 x 108<\/sup> N.
\n(f<\/em>)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0A rocket of mass 2\u00b72 x 106<\/sup> kg\u00a0 being launched from Neptune with an engine thrust of 4\u00b74 x 107<\/sup> N.<\/p>\n

10.\u00a0 A space shuttle has a weight of 1\u00b78 x 107<\/sup> N on Earth. Its engines produce a thrust of 2\u00b77 x 106<\/sup> N during part of its journey through space.
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (You will need to refer to the data sheet on page 24 for parts of this question<\/a>.)<\/p>\n

(a<\/em>)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Calculate the mass of the shuttle.
\n(b<\/em>)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0What is the acceleration of the shuttle in space while its engine thrust is 2\u00b77 x 106<\/sup> N?
\n(c<\/em>) Could the shuttle have been launched from Earth with this engine thrust of 2\u00b77 x106<\/sup> N? Explain your answer.
\n(d<\/em>)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0The engine thrust was 2\u00b77 x 107 <\/sup>N during the launch from Earth. What was the\u00a0acceleration of the shuttle during its launch?
\n(e<\/em>)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0If a similar shuttle was launched from Venus with an engine thrust of 2\u00b77 x 107 <\/sup>N,\u00a0what would be the acceleration of this shuttle during lift off?\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0
\n(f<\/em>) What engine thrust would be required in order to launch this shuttle from Jupiter with an acceleration of 5 m\/s2<\/sup>?<\/p>\n","protected":false},"excerpt":{"rendered":"

The Summary Notes section, including worked examples can be accessed by clicking here. 1.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Find the missing values in the table. 2.\u00a0\u00a0\u00a0 The engine of a space shuttle can produce a thrust of 600 000 N. The mass of the shuttle is 8 x 105 kg. Calculate the acceleration of the shuttle in space. 3.\u00a0\u00a0\u00a0 … Continue reading “Weight, Thrust and Acceleration”<\/span><\/a><\/p>\n","protected":false},"author":2454,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-27","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/wp-json\/wp\/v2\/pages\/27","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/wp-json\/wp\/v2\/users\/2454"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/wp-json\/wp\/v2\/comments?post=27"}],"version-history":[{"count":14,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/wp-json\/wp\/v2\/pages\/27\/revisions"}],"predecessor-version":[{"id":82,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/wp-json\/wp\/v2\/pages\/27\/revisions\/82"}],"wp:attachment":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/wp-json\/wp\/v2\/media?parent=27"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}