Please help me with physics question?

J

JayCee

New member
A 72 kg student weighs himself by standing on a scale mounted on a skateboard that is
rolling down an incline, as shown. Assume there is no friction so that the force exerted
by the incline on the skateboard is normal to the incline.
The acceleration of gravity is 9.81 m/s2 .
What is the reading on the scale if the angle of the slope is 28◦?
Answer in units of N.
 
F(of gravity) = MA

F(normal force) = MA * cos(angle)

F = 72 * 9.81 * cos28


Don't have a calculator, so can't really do all the math right there. So just plug that in :]
 
Back
Top