Question

If the spinning speed of the earth is increased, then weight of the body at the equator : 

(a) does not change 

(b) doubles 

(c) decreases 

(d) increases

Answer 1

Correct option (c) decreases 

Explanation:

Using the relation for acceleration due to gravity at the equator g′ = g − Reω² 

ω = spinning speed of earth Now observing from the given expression when spinning speed or angular speed ω of earth is increased, the value of g′ will decrease and hence, the weight of the body will decrease.