Answer:
8) A hanging 7.5 kg object stretches a spring 1.1 m. What is the spring constant? 1 . 1 66. 82 NIMO 9) A spring has a constant of 875 N/m. What hanging mass will cause this spring to stretch 4.5 m? Iouliply then divide 875 X 4. 2- - (4 04. 7919) 10) A spring with a spring constant of 25 N/m is stretched 65 cm. What was the force used? 11) A 25 N force stretches a spring 280 cm. What was the spring constant? 12) A 75 N force stretches a spring 175 cm. What was the proportionality constant? 8) 66.82 N/m 9) 401.79 kg 10) 16.25 N 11) 8.93 N/m 12) 42.86 N/m
Explanation:
The reading on the scale is greater than your actual weight.
Answer:
The acceleration of the crate is .
Explanation:
Given that,
Force, F = 750 N
Mass of the crate, m = 250 kg
The coefficient of friction is 0.12.
We need to find the acceleration of the crate. The net force acting on the crate is given by :
f is frictional force,
So, the acceleration of the crate is . Hence, this is the required solution.
Answer:
9.05 s
Explanation:
We can solve the problem by using the following suvat equation
where
v is the final velocity
u is the initial velocity
a is the acceleration
t is the time
For the car in this problem, we know that
u = 22 m/s is the initial velocity
v = 3.0 m/s is the final velocity
is the acceleration (negative since the car is slowing down)
So, by solving the equation for t, we find the time it takes for the car to slow down from 22 m/s to 3.0 m/s: