A block is pulled at constant speed along a rough level surface by a rope that makes an angle of 30° with respect to the horizontal. The applied force along the rope is . The force of kinetic friction between the block and the surface is 10 N.
-Which one of the following expressions gives the magnitude of the force in SI units?
A)10/(cos 30°)
B)10/(sin 30°)
C)10(cos 30°)
D)10(sin 30°)
E)tan 30°

Question

A block is pulled at constant speed along a rough level surface by a rope that makes an angle of 30° with respect to the horizontal. The applied force along the rope is . The force of kinetic friction between the block and the surface is 10 N. 
-Which one of the following expressions gives the magnitude of the force in SI units?
A)10/(cos 30°) 
B)10/(sin 30°) 
C)10(cos 30°) 
D)10(sin 30°) 
E)tan 30°

Quizplus · Accepted Answer

The Answer of A block is pulled at constant speed along a rough level surface by a rope that makes an angle of 30° with respect to the horizontal. The applied force along the rope is . The force of kinetic friction between the block and the surface is 10 N. 
-Which one of the following expressions gives the magnitude of the force in SI units?
A)10/(cos 30°) 
B)10/(sin 30°) 
C)10(cos 30°) 
D)10(sin 30°) 
E)tan 30°

A Block Is Pulled at Constant Speed Along a Rough