An irregularly shaped object 10 m long is placed with each end on a scale. if the scale on the right reads 96 n and the scale on the left reads 71 n, how far from the left is the center of gravity?
1. 5.7 m
2. 7.4 m
3. 4.3 m
4. 14m

option 3, 4.3 m

Explanation:

In order to do this, we need to know some things.

First,  the object is not moving, therefore the net torque, about any point is zero.

Second, we have an upward force of 71 N from the left (Wl) and an upward force of 96 N from the right (Wr).

Third, the distance from the left end to the center of gravity is L (Length of the object) - distance of right end (I will call this value x): L - x

And fourth, as the torque is zero, the expression to use is the following:

T = Wr * x - Wl * (L - x) = 0

WrX = Wl (L - x)

Solving for x:

96x = 71(10 - x)

96x + 71x = 710

167x = 710

x = 4.25 or 4.3 m

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min

365.25 earth days are in the year of a light year