Is there work done on the object?
I'm pushing a 10 kg cart across a 10 m distance room, with 0.7 coefficient of kinetic friction.
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Step 1 Expression for work done by the frictional force on an object is, Here, k...
Step 1 Expression for work done by the frictional force on an object is, Here, k is coefficient of kinetic friction, m is mass of object, g is gravitational acceleration, and d is displacement, Work done is path dependent parameter. In the given case, the person put the box at starting position. Hence, the displacement of the box is zero. Therefore, the work done by the person on the box 1S Zero Thus, the correct option is Concept Check 6.1...
Problem 1: Work done by constant forces. A 500N force is pulling an 100-kg refrigerator across...
Problem 1: Work done by constant forces. A 500N force is pulling an 100-kg refrigerator across a horizontal surface. The force acts at an angle of 36.9 degress above the surface. The coefficient of kinetic friction us 0.200, and the refrigerator moves a distance od 10.00 m. Determine: a.The work done by all the forces acting on the refrigerator. b. The net work acting on the refrigerator. c. The velocity of the refrigerator at the end of the 10 m,...
You push a 2 kg shopping mall cart down an aisle (how the heck is “aisle”...
You push a 2 kg shopping mall cart down an aisle (how the heck is “aisle” pronounced “aiyo”). The cart is initially travelling at 5 m/s the moment it left your hand. A) What is the initial kinetic energy of the cart? The cart slowed to a complete stop due to friction. B) What is the final kinetic energy of the cart when it stopped? C) Then, use the work-energy theorem to find the work done by friction. D) If...
12:3 Step 1 Expression for work done by the frictional force on an object is, Here,...
12:3 Step 1 Expression for work done by the frictional force on an object is, Here, is coefficient of kinetic friction, mis mass of object, g is gravitational acceleration, and is displacement. Work done is path dependent parameter. In the given case, the person put the box at starting position. Hence, the displacement of the box is zero. Therefore, the work done by the person on the box is zero. Thus, the correct option is oncept Check 6.1 A person...
Question 3. A block A, having a mass of 20-kg, is released from rest and slides...
Question 3. A block A, having a mass of 20-kg, is released from rest and slides down an incline with coeffici an incline with coefficient of static d kinetic friction of 0.25 and 0.10, respectively. When it reaches the bottom of the ramp, it slides ally onto the surface of a 10-kg cart for which the coefficient of static and kinetic friction between Question 3. A block A, having a mass of 20-kg, is released from rest and slides down...
2.) A person is pushing a 750 kg car a distance of 30m with a constant...
2.) A person is pushing a 750 kg car a distance of 30m with a constant pushing force of 550 N that is parallel to the ground. If the car is accelerated from rest to a speed of 1.5 m/s, find the coefficient of kinetic friction between the tires and the road. Use the Work kinetic energy theorem.
Two football players are pushing a 60 kg blocking sled across the field at a constant...
Two football players are pushing a 60 kg blocking sled across the field at a constant speed of 2.5 m/s. The coefficient of kinetic friction between the grass and the sled is 0.30. Once they stop pushing, how far will the sled slide before coming to rest?
4. Energy and Momentum for 15 points: A 200 gram lab cart is initially at rest...
4. Energy and Momentum for 15 points: A 200 gram lab cart is initially at rest on top of a 50 cm ramp, as shown. Note that the wheels are very light and the axle has no friction in it. You push the cart as it moves through a distance of 20 cm with a constant force of 10N in a direction oriented 20 degrees below horizontal. After you stop pushing on the cart, it encounters a ramp, and rolls...
In the figure, a stationary block explodes into two pieces L and R that slide across...
In the figure, a stationary block explodes into two pieces L and
R that slide across a frictionless floor and then into regions with
friction, where they stop. Piece L, with a mass of 2.0 kg,
encounters a coefficient of kinetic friction ?L = 0.40 and slides
to a stop in distance dL = 0.15 m. Piece R encounters a coefficient
of kinetic friction ?R = 0.50 and slides to a stop in distance dR =
0.22 m. What was...
1. A 300 kg piano slides 4.7 m down a 30 degree incline and is kept...
1. A 300 kg piano slides 4.7 m down a 30 degree incline and is kept from accelerating by a man who is pushing back on it parellel to the incline. The effective coefficient of kinetic friction is 0.35. Calculate the force exerted by the man. 2. A box is given a push so it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.25 and the push imparted an initial speed...
Step 1 Expression for work done by the frictional force on an object is, Here, k is coefficient of kinetic friction, m is mass of object, g is gravitational acceleration, and d is displacement, Work done is path dependent parameter. In the given case, the person put the box at starting position. Hence, the displacement of the box is zero. Therefore, the work done by the person on the box 1S Zero Thus, the correct option is Concept Check 6.1...
12:3 Step 1 Expression for work done by the frictional force on an object is, Here, is coefficient of kinetic friction, mis mass of object, g is gravitational acceleration, and is displacement. Work done is path dependent parameter. In the given case, the person put the box at starting position. Hence, the displacement of the box is zero. Therefore, the work done by the person on the box is zero. Thus, the correct option is oncept Check 6.1 A person...
Question 3. A block A, having a mass of 20-kg, is released from rest and slides down an incline with coeffici an incline with coefficient of static d kinetic friction of 0.25 and 0.10, respectively. When it reaches the bottom of the ramp, it slides ally onto the surface of a 10-kg cart for which the coefficient of static and kinetic friction between Question 3. A block A, having a mass of 20-kg, is released from rest and slides down...
2.) A person is pushing a 750 kg car a distance of 30m with a constant pushing force of 550 N that is parallel to the ground. If the car is accelerated from rest to a speed of 1.5 m/s, find the coefficient of kinetic friction between the tires and the road. Use the Work kinetic energy theorem.
4. Energy and Momentum for 15 points: A 200 gram lab cart is initially at rest on top of a 50 cm ramp, as shown. Note that the wheels are very light and the axle has no friction in it. You push the cart as it moves through a distance of 20 cm with a constant force of 10N in a direction oriented 20 degrees below horizontal. After you stop pushing on the cart, it encounters a ramp, and rolls...
In the figure, a stationary block explodes into two pieces L and
R that slide across a frictionless floor and then into regions with
friction, where they stop. Piece L, with a mass of 2.0 kg,
encounters a coefficient of kinetic friction ?L = 0.40 and slides
to a stop in distance dL = 0.15 m. Piece R encounters a coefficient
of kinetic friction ?R = 0.50 and slides to a stop in distance dR =
0.22 m. What was...
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