A crate of books rests on a level floor. To move it along the floor at a constant velocity, why do you exert less force if you pull it at an angle u above the horizontal than if you push it at the same angle below the horizontal?
Q: A 5 kg box rests on a tabletop. On one side, it compresses a spring with a stiffness of 1000 N/m by…
A: mass of box (m) = 5 kg spring constant (k) = 1000 N/m compression (d) = 1 cm = 0.01 cm
Q: A car (m= 1540 kg) is parked on a road that rises 18° above the horizontal. What are the magnitudes…
A:
Q: You are holding a book of mass 10.7 kg that is initially at rest against a vertical wall by exerting…
A: Given,Mass, m = 10.7 kgFYb = 100.8 Nμs = 0.46μk =0.36
Q: You can hold your 2.5 kg textbook against the wall, preventing it from slipping down, if you press…
A: In the system , there are two forces acting on the textbook vertically, the gravitational force or…
Q: A student of university physics who is transporting a heavy wooden box is becoming cognizant of…
A: Step 1: Let us draw a free body diagram of the situation Step 2: Using Newton's second law along…
Q: A child wants to pull a wagon with a mass of 5.0 kg up a hill, the slope of which forms an angle of…
A: Given:- θ= 8°
Q: To assess a patient who is suspected of having heart disease, the physician must examine the cardiac…
A:
Q: A ladder of length L and mass m leans against the side of a house, making an angle of θ� with the…
A:
Q: A Zamboni has broken down and is being pulled across the ice (consider it frictionless) by City of…
A:
Q: An Angry Bird sits on a clothes line midway between the two poles (see diagram). If the combined…
A: To understand this situation we need to draw a free body diagram in which tension T is resolved in…
Q: A crate of mass m = 91 kg rests on a rough surface inclined at an angle of θ = 31° with the…
A: Given: Mass of the crate =91 kg Angle of inclination =31° f=0.75 Calculation: a) Let a force "P" be…
Q: In the figure, a 50 kg rock climber is climbing a “chimney” between two rock slabs. The coefficient…
A: mass of the rock climber m=50kgcoefficient of static friction let N1 and N2 be the normal force by…
Q: he figure shows a section of a cable-car system. The maximum permissible mass of each car with…
A:
Q: A 2 kg aluminum block and a 6 kg copper block are connected by a light string over a frictionless…
A:
Q: A 5.0kg crate is tasting on a horizontal plank. The coefficient of static friction is 0.50. You…
A:
Q: 45kg gymnast wedges himself between two closely spaced vertical walls by pressing his hands and feet…
A: Given, Mass = 45 kg We need to calculate, Friction force with given condition =?
Q: A 10kg monkey is hanging from branches. The angles that the monkeys arms make with the horizontal…
A:
Q: A patient with a broken tibia has the lower half of his leg suspended horizontally by a cable…
A: Tension is the force transmitted axially by a string, a cable, a chain, or similar object, or by…
Q: You are out on a hike and come across an unfortunate scene: a fellow hiker has fallen off a ledge.…
A:
Q: Force T pulls at angle a up from the horizontal on a section of pipe of weight W as shown, but the…
A: Draw the free body diagram.
Q: m F 0 You are pressing a box against a sloped ceiling, perpendicular to the ceiling itself, as shown…
A:
Q: is µstatic = 0.30, and the block is stationary but just on the point of sliding down the slope. X Ff…
A:
Q: For the next three items: A 200 kg plank is projecting a distance L = 5.0 m from a wall which is…
A:
Q: An elevator has a mass of 200kg. An average person has of 40 kg. The elevator must accelerate upward…
A:
Q: stacked pair of books with masses m1= 2.0 kg (bottom book) and m2 = 1.5 kg (top book) are tossed…
A: The normal force exerted by the table on the first bolook N1= its weight = mg= 2×10=20 N . Similarly…
Q: The distance between two telephone poles is d = 54.0 m. When a 1.20 kg bird lands on the telephone…
A: Given Information:- Distance between the two poles is d=54.0 m Mass of the bird is m=1.20 kg The…
Q: In the back of the truck is a 200kg box that has a coefficient of static friction of 0.8 and a…
A:
A crate of books rests on a level floor. To move it along the floor at a
constant velocity, why do you exert less force if you pull it at an angle u above
the horizontal than if you push it at the same angle below the horizontal?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- An object hangs between two walls which are 1.8 m apart. If the rope sags 15° below horizontal and the object’s mass is 1.5 kg, what is the tension in the rope?You are a bully. You pin a 48 kg dweeb to a wall so that his feet aren't touching the ground. Your arm is extended so that it makes an angle 28 degrees with the horizontal. The dweeb's back is so sweaty with fear that there is no friction between his back and the wall. What is the magnitude of the force , in N, you must apply to keep the dweeb in equilibrium? (Use g = 10 m/s2) This scenario is represented schematically below. Unfortunately for you, years later the dweeb is your boss and he makes your life miserable. (Please answer to the fourth decimal place - i.e 12.3445)A heavy sled is being pulled by two people, as shown in the figure. The coefficient of static friction between the sled and the ground is H = 0.603, and the kinetic friction coefficient is µ = 0.403. The combined mass of the sled and its load is m = 336 kg. The ropes are separated by an angle o = 25.0°, and they make an angle 0 = 31.1° with the horizontal. Assuming both ropes pull equally hard, what is the minimum rope tension required to get the sled moving? minimum rope tension: If this rope tension is maintained after the sled starts moving, what is the sled's acceleration? m/s2 acceleration:
- Two crates of fruit are released from the top of a ramp inclined at 30 degrees from the horizontal and 4.5 meter long. The two crates consist of an apple crate of mass 20 kg that is placed in front of a watermelon crate of mass 80 kg. The apple crate has a coefficient of friction of 0.20 while the watermelon crate has a coefficient of friction of 0.15. How long does it take the apple crate to reach the bottom of the incline if it needs to travel a distance of 4.5 meters?A small box with a weight of 35.0 N is placed on top of a larger box that has a weight of 80.0 N. The system of two boxes is at rest on a horizontal surface (the larger box is in contact with the surface). You apply an additional downward force of 30.0 N to the top of the small box by resting your hand on it. For this problem, use g = 10 N/kg. (a) What is the magnitude of the force exerted on the large box by the small box? (b) What is the magnitude of the force exerted on the large box by the surface? Now, imagine that the horizontal surface is the floor of an elevator, and the boxes are in the elevator, which has an acceleration directed downward of 1.00 m/s?. (c) What is the magnitude of the force exerted on the large box by the small box in this case? (d) What is the magnitude of the force exerted on the large box by the surface in this case? NA wracking ball is suspended below two cables each at an angle with the horizontal. The left cable has tension T1 and angle 39 degrees with the horizontal. The right cable has tension T2 and angle 24 degrees with the horizontal. The Wracking ball has mass 160 kg.
- A car of mass m₁ 1000 kg is connected to a trailer of mass m2 = 400 kg by a taut inextensible cable. The car's engine provides a constant forward driving force Fx = 7000 N, which causes the car-plus-trailer to accelerate forwards along the horizontal x-axis. The tension of the cable produces a force on the trailer and also a force on the car. You may assume that the magnitude of the two forces is the same. You may also ignore friction. What is the tension in the cable joining the car to the trailer? Give your answer by entering a number, correct to an appropriate number of significant figures, in the empty box below.A block of mass 1.45 kg is resting on a board with friction.The board is inclined until the mass just starts to slide. If the angle of the incline when the mass just barely begins to slide is 17.5 degrees,what is the coefficient of static friction between the block and the board?