Power

JEE Main Physics · Work, Power and Energy · 11 questions, latest first

• A body of mass 2 kg begins to move under the influence of time dependent force F=(2 t i+6 t^2 j) N, where i and j are unit…20264 April, Shift 1 · Q49
• An object of mass 1000 g experiences a time dependent force F=(2 t i+3 t^2 j) N. The power generated by the force at time t is:20257 April, Shift 1 · Q28
• A sand dropper drops sand of mass m(t) on a conveyer belt at a rate proportional to the square root of speed (v) of the belt,…202529 January, Shift 2 · Q27
• A body of mass 4 kg is placed on a plane at a point P having coordinate (3,4) m. Under the action of force F=(2 i+3 j) N, it…202528 January, Shift 2 · Q31
• A body is moving unidirectionally under the influence of a constant power source. Its displacement in time t is proportional to:20245 April, Shift 2 · Q35
• A body of mass 2 kg begins to move under the action of a time dependent force given by F=(6 t i+6 t^2 j) N. The power developed…202431 January, Shift 2 · Q35
• The ratio of powers of two motors is (3 √x)/(√x+1), that are capable of raising 300 kg water in 5 minutes and 50 kg water in 2…202313 April, Shift 1 · Q41
• A block of mass 5 kg starting from rest pulled up on a smooth incline plane making an angle of 30^° with horizontal with an…202311 April, Shift 2 · Q54
• If the maximum load carried by an elevator is 1400 kg ( 600 kg - Passengers +800 kg - elevator), which is moving up with a…202310 April, Shift 2 · Q54
• A body of mass 2 kg is initially at rest. It starts moving unidirectionally under the influence of a source of constant power P.…202330 January, Shift 2 · Q23
• A body of mass 1 kg begins to move under the action of a time dependent force F=(t i+3 t^2 j) N, where i and j are the unit…202324 January, Shift 2 · Q24