A man raises 1 kg wt. to a height of 100 cm and holds it there for 30 minutes. How much…
Physics · JEE Advanced · NTA Exams — Work, Energy and Power
A man raises 1 kg wt. to a height of 100 cm and holds it there for 30 minutes. How much work has he performed?
- 1 × 9.8 J
- 1 × 9.8 × 30 × 60 J
- 1 × 9.8 × 30 J
- 1 × 9.8 × 30 erg.
Answer
(A) 1 × 9.8 J
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- In the given figure the variation of potential energy of a particle of mass m = 2 kg is represented w.r.t…
- A pulse of light of duration 100 ns is absorbed completely by a small object initially at rest. Power of the…
- A bob of mass M is suspended by a massless string of length L . The horizontal velocity V at position A is…
- A tennis ball is dropped on a horizontal smooth surface. It bounces back to its original position after…
- The force acting on a body moving along x–axis varies with the position of the particle as shown in the…
- The potential Energy as a function of the force between two atoms in a diatomic molecule is given by U(x)= a…
- A force F acting on a body depends on its displacement S as F ∝ S–1/3 . The power delivered by F will depend…
- A particle is acted by a force F = kx , where k is a +ve constant. Its potential energy at x = 0 is zero…
More Work, Energy and Power questions · Browse all practice questions