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a) A particle is projected from a point on the horizontal ground with speed u m s –1 at an angle 30° to the horizontal. (b) A particle is projected up an inclined plane with initial speed u.
(2014)
(a) A block A of mass 4 kg, can slide on a rough horizontal table. (b) A smooth wedge, of mass 8 kg and slope 30°, rests on a smooth horizontal surface.
(a) A smooth sphere A, of mass 2m, moving with speed u collides directly with a smooth sphere B, of mass 7m, which is at rest. B then collides with a vertical wall which is perpendicular to the direction of motion of the spheres. (b) A smooth sphere P
(a) A particle of mass 5 kg is suspended from a fixed point by a light elastic string. (b) A particle of mass m, is suspended by a light inextensible string AB of length 2d.
(a) A letter L is made from a sheet of uniform thin plastic, with dimensions as shown in the diagram. (b) A uniform rod of length 3.4 m and weight 85 N is smoothly hinged at P to a rough horizontal floor.
