Click the lightest tow rope which can be used to pull a 6,000 lb pallet across the warehouse floor. a.2000 b.5000 c.1500 d.15000

B. 5000

Explanation:

The tow rope should be strong enough so that it can overcome the frictional force and pull pallet without breaking. In question following data is given:

                          Weight of pallet = W = 6000lbs  

                          Coefficient of friction = uK = 0.42

The tow rope required to pull pallet = (Weight of pallet) (Coefficient of friction)

                                                               = (W)( uK)

                                                                = (6000)(0.42)

                                                                 = 2520 lbs

5000lbs is higher value than 2520lbs. Hence, if we will use 5000lbs tow rope it can easily pull the pallet.

a.   mass number from atomic number

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards