Calculate the force needed to hold a 2000-kg car
on a ramp that makes an angle of 30 degrees with the horizontal, if the force is to be applied parallel to the ramp.

Question

anonymous · Answer

resolving forces parallel to the slope,  let force required = f and g = 9.8

f = 2000* g * sin 30
  =  2000* 4.9
  =   9,800 N

i have assumed there is no friction between the car and the ramp.

anonymous · Answer

by the way moongazer i finally solved the question about the woman on the borad.
the force on right hand support is 899 N so it would not be a safe siruation.

moongazer · Answer

yup your answer was correct :)
thanks