M1 Resolving Forces
A stack of mass 8kg is pulled up a ramp inclined at 20 degrees to the horizontal by a force of magnitude 45N acting parallel to a line of greatest slope of the ramp. The acceleration of the sack is 1.4ms^-1. Find the frictional force.
I have:
F-8gcos70=0.
F=26.8N
That's wrong
(
I have:
F-8gcos70=0.
F=26.8N
That's wrong
(SOMEONE HElp me now OMG....ffs
Original post by Thebestgod
SOMEONE HElp me now OMG....ffs
Be a bit patient!!
Right, you should know that the resultant force = mass x acceleration. The resultant force is the pulling force minus the horizontal component of weight minus the frictional force. Substitute into the equation and rearrange for frictional force.
Original post by Blazy
Be a bit patient!!
Right, you should know that the resultant force = mass x acceleration. The resultant force is the pulling force minus the horizontal component of weight minus the frictional force. Substitute into the equation and rearrange for frictional force.
Right, you should know that the resultant force = mass x acceleration. The resultant force is the pulling force minus the horizontal component of weight minus the frictional force. Substitute into the equation and rearrange for frictional force.
do it for me plz... i cba to think right now watching movie
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