JEE Main Physics question

Physics Work, Energy and Power JEE Main

A body of mass m accelerates uniformly from rest to v₁ in time t₁. As a function of time t, the instantaneous power delivered to the body is

(A)mv₁t/t₁
(B)mv₁²t/t₁²Correct
(C)mv₁t²/t₁
(D)mv₁²t²/t₁²

Answer: (B)

Solution

Acceleration a = v₁/t₁. Instantaneous power, P = F·v = ma·(at) = ma²t = m(v₁/t₁)²t =

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-153991