1
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

The bob of a pendulum of length 2 m lies at P, when it reaches Q, it losses 10% of its total energy due to air resistance.

BITSAT 2021 Physics - Work, Energy and Power Question 5 English

The velocity of bob at Q is

A
6 m/s
B
1 m/s
C
2 m/s
D
8 m/s
2
BITSAT 2020
MCQ (Single Correct Answer)
+3
-1

A ball of mass 0.5 kg is thrown up with initial speed 16 ms$$-$$1 and reaches maximum height of 9 m. How much energy is dissipated by air drag acting on the ball during the ascent?

A
199 J
B
19.9 J
C
20.9 J
D
9.9 J
3
BITSAT 2020
MCQ (Single Correct Answer)
+3
-1

A time dependent force F = (8t) acts on a particle of mass 2 kg. If the particle starts from rest, the work done by the force during the first 1s will be

A
0.4 J
B
4 J
C
19 J
D
4.5 J
4
BITSAT 2020
MCQ (Single Correct Answer)
+3
-1

The work done by a force acting on a body is as shown in the following graph. The total work done in covering an initial distance of 40 m is

BITSAT 2020 Physics - Work, Energy and Power Question 2 English

A
500 J
B
600 J
C
400 J
D
800 J
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