{"id":13,"date":"2014-10-22T07:06:50","date_gmt":"2014-10-22T07:06:50","guid":{"rendered":"http:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/ppp-exercise-9\/"},"modified":"2014-11-10T08:09:42","modified_gmt":"2014-11-10T08:09:42","slug":"ppp-exercise-9","status":"publish","type":"page","link":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/ppp-exercise-9\/","title":{"rendered":"PPP Exercise 2D"},"content":{"rendered":"

1.\u00a0\u00a0\u00a0 A 70 kg sledge is pulled along as shown below<\/p>\n

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

If the frictional forces amount to 50 N, calculate :<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (a)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 the unbalanced force acting sledge
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (b)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 the acceleration of the sledge.<\/p>\n

2.\u00a0\u00a0\u00a0 The forces acting on a bus are shown below<\/p>\n

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

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 If the total mass of the bus and passengers is 4 500 kg, calculate:<\/p>\n

\"\"<\/a>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (a)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 the unbalanced force acting on the bus
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (b)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0the acceleration of the bus.<\/p>\n

3.\u00a0\u00a0\u00a0 The forces acting on a rocket at launch are as shown in the diagram opposite.<\/p>\n

4.\u00a0\u00a0\u00a0 A car of mass 1 200 kg is accelerating along a dual carriageway at a constant rate of 3 ms-2<\/sup>.\u00a0<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (a)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Calculate the unbalanced force acting on the car.
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (b)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 The engine force is 3 800 N. Calculate the force of friction between the tyres and the road surface.<\/p>\n

5.\u00a0\u00a0\u00a0 Forces acting on a train of mass 50 000 kg are as shown below.<\/p>\n

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

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Calculate:<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (a) \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 the unbalanced force acting on the train
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (b)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0the acceleration of the train<\/p>\n","protected":false},"excerpt":{"rendered":"

1.\u00a0\u00a0\u00a0 A 70 kg sledge is pulled along as shown below \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 If the frictional forces amount to 50 N, calculate : \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (a)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 the unbalanced force acting sledge \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (b)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 the acceleration of the sledge. 2.\u00a0\u00a0\u00a0 The forces acting on a bus are shown below \u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 If the total mass of the bus … Continue reading PPP Exercise 2D<\/span> →<\/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-13","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/pages\/13","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/users\/2454"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/comments?post=13"}],"version-history":[{"count":7,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/pages\/13\/revisions"}],"predecessor-version":[{"id":87,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/pages\/13\/revisions\/87"}],"wp:attachment":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/media?parent=13"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}