Help please 1.Two people are pushing their stalled car up a hill with an incline

Question

Help please
1.Two people are pushing their stalled car up a hill with an incline of 3.60 degrees. They are pushing parallel to the surface of the hill. The cars mass is 954 kg. what is the combined force they must apply to keep the car moving at a constant speed up the hill? Ignore the forces of friction and air resistance.

2. you decide to find the coefficient of static friction between a paper cup and an archaic paper textbook. Armed with a metric ruler, you place the cup on the edge of the book, and raise the edge of the book until the cup starts to slide downwards. the length of the book is 26.0 cm and you need to raise one edge 8.00 cm before the paper cup start sliding. If the cup has a mass of 211 grams what is the coefficient of static friction between the cup and the book?

Explanation / Answer

1)

force required = force of gravity along incline

=mgsin(3.60)

=954*9.81*sin(3.60)

=587.64014674 N

2)angle of inclined formed = arcsin(8/26)

now

mgsin(theta) = mu * mgcos(theta)

tan(theta) = mu

mu = 0.32338083344

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.