- #1
sauri
- 51
- 0
homework help!
Hi! everyone I am new tp physics and I need help. We had just finished a part on Newtons 1st and 2nd laws and were given a question as follows.
An object is sliding down a hill, at an angle 30 degrees to the horizontal. The object has mass 50Kg. If the acceleration of the object is 0.6 ms^-2, what is the friction force acting on the object.
So, I first began by constructing the free body force dig. I marked the weight Mg downwards, the normal reaction R upwards, frictional force backwards and a force P forward. So firstly did I mark it correctly?
Now I know that F=ma does apply here but I am not sure about the other component. All I could come up with is
Psin30+mg = R and F= Pcos30.
I know something is wrong here but I don't know what!. Can anyone help me please?
Hi! everyone I am new tp physics and I need help. We had just finished a part on Newtons 1st and 2nd laws and were given a question as follows.
An object is sliding down a hill, at an angle 30 degrees to the horizontal. The object has mass 50Kg. If the acceleration of the object is 0.6 ms^-2, what is the friction force acting on the object.
So, I first began by constructing the free body force dig. I marked the weight Mg downwards, the normal reaction R upwards, frictional force backwards and a force P forward. So firstly did I mark it correctly?
Now I know that F=ma does apply here but I am not sure about the other component. All I could come up with is
Psin30+mg = R and F= Pcos30.
I know something is wrong here but I don't know what!. Can anyone help me please?