A 170-kg granite rock (r = 2700 kg/m3) is dropped into a lake. A man dives in and tries to lift the rock. Determine how much force the man needs to apply to lift it from the bottom of the lake. Do you think he can do it?

Q: A car traveling at 20 m s" collides with a massive wa!l and stops instantly. A passenger of mass 75…

A: Given, velocity of car = 20 m/s So, velocity of passenger = 20m/s  mass of passenger, m = 75kg Now,…

Q: A rock of mass m = 1.9 kg is released from a height of h = 3.2 m into a basin of water. At a time of…

A:

Q: read if. Part b) has the elevator accelerating up at 1.5 m/s?, while part c) has it accelerating…

A: Weight of the passenger when the elevator is at rest 572 kg. Case 1: Elevator is moving up at…

Q: A 3 kg box is displaced at a rate of 5 m/s. How much force is required to stop the box in 0.8…

A: The acceleration is given by  a =v - ut where,  v is the final velocity, u is the initial velocity,…

Q: 6 A ball with a mass of m is thrown into the air. What is the force exerted on Earth by the ball? A…

A: A ball with a mass m is thrown into the  air.so the force of gravitation is being applied by both…

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A:

Q: 19. Alpha Interbatch. the figure below, and you push the leftmost block with a force F = 100 N.…

A: Given Data The force is:F=100 N The total mass of the system is:M=10 kg To find: The minimum…

Q: 2. A 2 kg box is suspended in the air. Attached to each corner of the box is a rope. All 4 ropes are…

A: SOlution: Given that m = 2 kg 4 corners are tied with equal length rope and suspended from a point

Q: Three friends push on a 50 kg rock on very slippery ice. One friend pushes to the North with a force…

A:

Q: Annabeth hangs her dress outside to dry for her coming birthday. The dress weighs 11.77 N and…

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Q: Mike's car, which weighs 1,000 kg, is out of gas. Mike is trying to push the car to a gas station,…

A:

Q: Block A is connected to block B using a rope that passes over a frictionless pulley. The coefficient…

A: Given : Mass of block A = 5 kg             Coefficient of static friction = 0.60

Q: The wedge supports a mass m and between them there is a coefficient of friction µk. The wedge with…

A: Here, we apply Newton's second law after drawing the free body diagrams of both bodies.

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A: The 1200 kg car is initially travelling at 20 m/s, before it crashes into the barrels. As soon as…

Q: done in the toy rocket when it is 13 meters high. 15.0 10.05 re 5.00- F e, N 0.00- 4.00 8.00 120…

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Q: rebound with the same speed but moving in the opposite direction, what is the average acceleration…

A: Given, Initial velocity, vi=6.70×102 ms Final velocity, vf=-6.7×102 ms Mass , m=4.68×10-26 kg Time,…

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Q: 21. A canal barge is being pulled along a canal by two horses, one on either side of the canal. One…

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Q: The Hindenburg departed from Frankfurt, Germany on May 3 and was heading to Lakehurst Naval Air…

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Q: A 75 kg astronaut brings a standard bathroom scale with him into space. What does the scale read if…

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Q: A 0.55kg block is being pulled by a 2.5 N force East across a horizontal frictionless surface. What…

A: Use Newton's second law F→=ma→a→=F→m

Q: 1. A motorcycle's engine with weight w hangs from a chain that is linked at ring J to two other…

A: (a) Free-body diagram is a diagram where all forces are shown in the diagram. The free-body diagram…

Q: A rope of negligible mass passes through a pulley of negligible mass and friction hanging from the…

A: a=m1-m2m1+m2g

Q: A car traveling at 29.6 m/shits a bridge abutment. A passenger in the car, who has a mass of 57.0…

A: From the equation of motion,

Q: A 15 kg steel ball is suspended at the air using 2 different types of cables. Cable is made up of…

A: Given Data : The mass of the steel ball is given as m = 15 Kg. The angle of cable A with the…

Q: A 50.0 kg girl and a 100 kg boy, stand on a frictionless frozen lake at a distance 6.0 m apart.…

A: mass of girl = 50 kg mass of boy = 100 kg distance between girl and boy = 6 m force exerted by boy…

Q: Juanita bought a balloon filled with helium. To keep the balloon from escaping, she tied the string…

A:

Q: Mr. Patrick had his players perform three trials with each bat (2kg bat, 3kg bất ând 4kg bat). The…

A: Given,

Q: Block A has mass M and block B has mass 2M. Let the density of water be denoted by p and the…

A: Visualize the Problem:

Q: A 6.00-kg block is in contact with a 4.00-kg block on a rough surface as shown in the figure. Total…

A: Mass of Block 1 (m1)=6kg Mass of block 2 (m2)=4kg Total friction force(f)=10N  force which pushes…

Q: Question 1 What is the force between a 3-kg bag of flour and a 5-kg bag of sugar that are 0.5 m…

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Q: .470 kg wooden block is spun around on a wooden table. The wooden block is being spun around on a…

A: Answer the following question is

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A: Required :: Which cube will be more likely to begin sliding. Both the cubes will slide at the same…

Q: 8. GO The space probe Deep Space 1 was launched on October 24, 1998. Its mass was 474 kg. The goal…

A:

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!