Ted wants to hang a wall clock on the wall by using a string. If the mass of the wall clock is 0.250 kilograms, what should be the tension of the string so that it can sustain the weight of the wall clock?
A.
0.245 newtons
B.
2.45 newtons
C.
0 newtons
D.
4.90 newtons
E.
0.120 newtons

Question

Ted wants to hang a wall clock on the wall by using a string. If the mass of the wall clock is 0.250 kilograms, what should be the tension of the string so that it can sustain the weight of the wall clock?
A. 
0.245 newtons
B. 
2.45 newtons
C. 
0 newtons
D. 
4.90 newtons
E. 
0.120 newtons

Vocaloid · Answer

Two forces to consider here: gravity which pulls downward and tension which pulls upward

For the clock to be stationary, tension = gravity

T = mg

So simply multiply your clock’s mass (0.250kg) * the gravitational constant (9.81)