When someone jumps, one always bends one's knees to lower the centre of mass. A student at PW lowers her centre of mass of the body by 40 cm and then jumps up. She can usually reach a height of 50 cm above her normal height. If she is of mass 50 kg and jumps as described above, the work done by the her is (Take 
)
Text Solution
Verified by ExpertsThe correct answer is:
A
So, 
Where 
is height gained by C.M
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
PHYSICS
SINGLE CORRECT MCQ.
The position co-ordinates of a particle moving in a space varries with …
The diameter and height of a cylinder are measured by a meter scale to be and , respectively. Wha…
An equilateral triangle is constructed by joining three identical thin uniform rods. Consider two a…
A particle initially at rest moves in a stra1ght line with constant acceleration. The instantaneous…
The resultant magnitude of the three vectors and with their magnitudes mentioned as shown in adjo…
Initially, the system is at rest. Find out maximum value of for which the blocks move together. [T…