A decorative light fixture in an elevator includes a 1.7 kg light suspended by a cable from the ceiling of the elevator. At the bottom of this light, a second cable suspends another 0.40 kg light. The elevator is moving downward at 3.6 m/s when someone presses the emergency stop button. During the stop, the upper cable snaps. The elevator engineer says that the cable could withstand a force of 40 N without breaking. How long does it take for the elevator to stop?

Q: 22 A basketboll wich can be modeled os a thin spheri col shell, hos a moss of 0250 kg and a radius…

A:

Q: A box rests on a horizontal surface. You apply a force on the box of F = 100 N at an angle, θ, below…

A:

Q: 5.8 kg object is tied to a rope that is attached of the ceiling. What is the tension on the rope.

A:

Q: A student weighs 200 N. If he is in an elevator that is accelerating upward at 2.00 m/s/s, what will…

A: Given that:-Weight of student=mg=200NUpward acceleration, a=2.00m/s2We know thatApparent weight of a…

Q: The child pulls the sled up a hill. The hill is inclined at an angle of 10º. The sled has a mass of…

A: θ = 10om = 8 kg a = 0.28 ms2The tension in the rope = T

Q: A kickball has a mass of approximately 0.549 kg. How much force must be applied by the player to…

A: Mass of kickball: m = 0.549 kg Initial speed of ball : u = 0 m/s Final speed of ball: v = 20.0 m/s…

Q: A 60kg person rides in an elevator while standing on ascale .the scale reads 40N what is…

A: weight = W = m×g = 60 * 9.8 = 588 N   Given that scale reading N = 40 Newton According to this…

Q: A 65kg person traveling at 29m/s (65mph) collides head on with a jersey barrier.  How much force in…

A: mass of person m=65kg speed of person u=29m/s after colliding with bat person comes to rest so final…

Q: 57. A girl pushes a 10 kg box from rest across a horizontal floor with a force of 50 N. The force of…

A: Given information:Mass of the block (m) = 10 kgForce applied by the girl (F) = 50 NFriction force…

Q: A dog is pulling a 65 kg sled up a hill inclined at 20 degrees above the horizon. The dog pulls with…

A: Given Datam=65kgθ1=20°θ2=29°P=465Nf=75NTo find a=?

Q: A 5 kg box lies on a table.You press on the top of the box with your hand with force of 9N pointing…

A:

Q: A 900-N man stands on a scale on the floor of an elevator. The scale records the force it exerts on…

A: Given: The weight of the man is 900 N. The acceleration of the elevator is 1.5 m/s2.

Q: As a 2.5 kg ball rolls down a ramp, the net force on it is 15 N.  What is its acceleration?

A:

Q: A 1000-kg elevator is rising and its speed is increasing at 3 m/s2. The tension force of the cable…

A: Given :m=1000 kga=3 m/s2 (up)m→massa→acceleration

Q: An astronaut's weight on earth is 800 N. What is his weight on Mars, where g=3.76m/s2?

A:

Q: A 20-kg loudspeaker is suspended 2.0 mm below the ceiling by two ropes that are each 30∘∘ from…

A:

Q: ducks are attached to each other by strings and are being pulled by a force of 9.5N. The duck at the…

A:

Q: A 2.53 kg mass is suspended from a string which is pulled upward. The mass accelerates upwards with…

A: T-mg=ma          T=ma+g

Q: 10. Consider the complicated arrangement below: ol mi bega aldaco wo bosce ond ltod berdos and od…

A: The heavier mass goes down. Assume mass m1 is greater than mass m2.

Q: 8. A mass m₁ = 9.00 kg is connected by a light string that passes over a pulley of mass M = 14.0 kg…

A: Required  value of tension acting on mass m2

Q: As a 2.5 kg ball rolls down a ramp, the net force on it is 15 N. What is its acceleration?

A: The acceleration(a) of the ball. given, Net force(F)=15 N mass(m) of the ball=2.5 kg

Q: A bag of sugar weighs 5.00 lb on Earth. What would it weigh innewtons on the Moon, where the…

A:

Q: Janine is pushing a 55 kg cart. She pushes with a force of 28 N, and increases the cart's velocity…

A: Given mass of the cart, m = 55 kg Force applied by the Janine, F = 28 N velocity of the cart…

Q: The maximum force that can be put on an egg without breaking it has been determined to be 15 N.  If…

A: Maximum Force= Fmax=15N acceleration=a= Fmax/m=15N/0.15kg=100m/s2.

Q: A 70.0-kg man is standing on a scale in an elevator that is accelerating upward at a rate of 2.00…

A: Answer Given  Masst of the man m = 70 kg Acceleration of the elevator a = 2 m/s2 We need to find the…

Q: What is the tension in the cable that is lifting a 3500 kg elevator if the upward acceleration of…

A: Since the elevator is accelerating upward, the net force is given by F=T-mgma=T-mgT=ma+g Substitute…

Q: An 1700 keg elevator has a cable that can support 25,000 N of force. If it carries ten people at 50…

A: Given, mass of an elevator, m = 1700 kg maximum tension, T = 25000 N mass of the person, m = 50 g

Q: Zach, whose mass is 80 kg, is in an elevator going down at 2.0 m/s. The elevator takes 4.0 s to…

A: Given, the zach whose mass is 80 kg, is in an elevator going downat 2.0 m/s. The elevator takes 4.0…

Q: A 2 kg otter starts from rest at the top of a muddy incline to 85 cm long and slides down to the…

A:

Q: A 500 g object moves with a constant velocity of 2.0 m/s. What is the force acting on it?

A: The object is moving with a constant velocity, so the initial velocity of the object will be equal…

Q: coefficient of kinetic friction betwee

A: 2.8 m/s2

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: