Question

What will be the weight of 100 kg mass on the earth Surface , If its volume is com pressed into the size o the moon (mass of earth =6×10²⁴kg and the radius of the moon is 1.7×10⁵.​

Answer 1

Answer:

Answer is a

Explanation:

Acceleration due to gravity on the surface of moon, g′=1.7ms−2

Acceleration due to gravity on the surface of earth, g=9.8ms−2

Time period of a simple pendulum on earth, T=3.5s

T=2πgl

where, 

l is the length of the pendulum

∴l=(2π)2T2×2

=4×(3.14)2(3.5)2×9.8m

The length of pendulum remains constant

On moon's surface, time period, T′=2πg′l

=2π1.74×(3.14)2(3.5)2×9.8=8.4 s

Hence, the time period of the simple pendulum on the surface of moon is 8.4 s.