Question

A horizontal spring with spring constant 950 n/m is attached to a wall. An athlete presses against the free end of the spring, compressing it 7. 0 cm.

Answer 1

66.5 N

Step-by-step explanation:

Newton's 2 law with F=ma.

Fspring (force spring) = 950n/m

Ft (force tension) =?

length of the spring compressed = 7.0 cm

Since it is in two different units meter with the m and centimeter with cm.

7.0cm/100cm =0.07 m using conversions.

then it lines up

950N times 0.07m

m

the meters cancel out and you get

66.5 N

note: this only work becasue the free body diagram of the object is in the x direction so becasue that is the only thing that we are trying to find this works here.