Answered: 6 J of work is needed to push an object… | bartleby

Related questions

Question

6 J of work is needed to push an object of mass 2 kg from point A to point B of the frictionless inclined plane as showm in Fig. 8-9. If the angle of inclination is 30°, the height of the plane is h, what is the length of the inclined
plane? Use g = 10 m/s?.
O 6m
O 10 m
O 0.6 m
O 3m
O 0.3 m

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

i) A small 25g toy rocket is launched straight up from the ground at 144 km/h (a) What is the kinetic energy of the toy rocket? (b) Find the work done by gravity after it has risen 220 m. (i) (a). The kinetic energy of the toy rocket is = (b). The work done by gravity after it has risen 220 m is =
A child of mass m = 16 kg slides down a slide of height h = 2.7 m without friction. Let gravitational potential energy be zero at ground level. a)Write an expression for the child's total mechanical energy, E, at the top of the slide, in terms of the variables in the problem and the acceleration due to gravity g. b)Calculate the change in the child's potential energy, ΔU in joules, from the top to the bottom of the slide at ground level (i.e. ΔU = Uground - Utop). c)What is the child's final speed, vf in m/s?
A 60 kg box has an initial velocity of 12 m/s up a 60-degree inclined plane at an initial height of 0 meters. The coefficient of friction between the box and the ground is 0.2. [a] Calculate the box’s maximum height up the inclined plane. [b] Calculate the work done by friction. [c] If you increased the angle of the inclined plane, explain how that would affect the work done by friction.
A sled is initially given a shove up a frictionless 26.0 incline. It reaches a maximum vertical height 1.50 m higher than where it started at the bottom. a) What was its initial speed?
An escalator is used to move 2.1 * 10 people (60 kg each) per minute from the first floor of a department store to the second floor, 5 m above. The power required is Watts. of 5 m 30°
Problem 2: Suppose a car approaches a hill and has an initial speed of 108 km/h at the bottom of the hill. The driver takes her foot off of the gas pedal and allows the car to coast up the hill. a) If the car has the initial speed stated at a height of h = 0, how high, in meters, can the car coast up a hill if work done by friction is negligible? b) If, in actuality, a 770-kg car with an initial speed of 108 km/h is observed to coast up a hill and stops at a height 20.5m above its starting point, how much thermal energy was generated by friction in J?
A 2,200-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 4.60 m before coming into contact with the top of the beam, and it drives the beam 15.0 cm farther into the ground as it comes to rest. Using energy considerations, calculate the average force the beam exerts on the pile driver while the pile driver is brought to rest. magnitude X N direction |upward