A hot-air balloon of mass Mis descending vertically with downward acceleration of magnitude a. How much mass (ballast) must be thrown out to give the balloon an upward acceleration of magnitude a? Assume that the upward force from the air (the lift) does not change because of the decrease in mass.

Q: A sled with mass of 10.3 kg is sitting at the top of a hill, which is inclined at an angle of 29…

A: Here a sled is at the top the hill. The hill is inclined with 29° to horizontal. Again the kinetic…

Q: The upward normal force exerted by the floor is 620 N on an elevator passenger who weighs 650 N.…

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Q: If the only forces acting on a 2.0 kg mass are F1=(3i-8j) N and F2=(5i+3j) N, what is the magnitude…

A: The total force is,

Q: Two blocks (A) and (B) of respective masses ma = 2 kg and mg = 3 kg, are placed in contact side by…

A: Answer:-  12 N  Given  Mass of block A (mA) = 2 kg  Mass of block B(mB) = 3 kg  Force (F) = 20 N…

Q: On the way to lower floors, an elevator begins its descent from rest with a constant acceleration,…

A: To solve the given question, we need to find the acceleration of the elevator first. Given(s):…

Q: A 2230-kg airplane starts from rest and, with a constant acceleration of magnitude 5.60 m/s^2,…

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Q: The driver of a 1200 kg car steps on the brakes on a dry horizontal concrete roadway. Determine the…

A: Total mass = m= 1200 kg Co efficent of friction = 0.5 Frictional force between each tire= ?

Q: A small weight is suspended from a string of negligible weight and given an initial horizontal…

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Q: A 60 kg block is pushed by a horizontal force causing the block to accelerate by 1 m/s2. The block…

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Q: Two blocks X and Y, of masses M and 3M respectively, are accelerated along a smooth horizontal…

A: Answer :-  Given  Mass of block X = M  Mass of block Y = 3M  The force F  applied to block X,…

Q: An object of mass 2 kg is observed to have acceleration with a magnitude of 10 m/s2 in a direction…

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Q: A cart is pushed horizontally with a constant force of 0.50 N and is observed to accelerate at a…

A: 1. given that  applied force (F)=0.50 N acceleration (a)=0.10 m/s2 mass of the cart (m)=?

Q: If the net, external force acting on a body is zero, then a. The body is accelerating at a small…

A: We know that Force = mass x acceleration In this question it is given that net external force is…

Q: Shown below is a 10.0 kg block being pushed by a horizontal force F of magnitude 217.0 N. The…

A: Given that mass of the block and magnitude of horizontal force and also given the coefficient of…

Q: Block A has a mass of 10 kg, and blocks B and c have masses of 5 kg each. Knowing that the blocks…

A: Writing the constraints on cord AD (as shown in figure 1), Writing the constraints on cord BC,

Q: If it actually hits the ground with a speed of 9.00 m/s, what is the magnitude of the average force…

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Q: A 60 kg skydiver can be modeled as a rectangular "box" with dimensions 22 cm × 40 cm × 1.8 m. What…

A: The expression for terminal speed is vT=2mgρACd Area of the sky driver experience the air resistance…

Q: As shown below, the mass of block 1 is m1 = 4.0 kg, while the mass of block 2 is m2 = 7.0 kg. The…

A: Given data *The mass of the block 1 is m1 = 4.0 kg *The mass of the block 2 is m2 = 7.0 kg The…

Q: An electron of mass 9.11 x 10 kg has an initial speed of 3.00 x 10° m/s. It travels in a straight…

A: The third equation of motion is  v2 = u2 + 2 a s where, u is the initial velocity, v is the final…

Q: An elevator, with a total mass of 454 kg, accelerates downward at 3.51 m/s^2. During this time, the…

A: Given data:  Total mass (m) = 454 kg Acceleration (a) = 3.51 m/s2, downward Required: The tension in…

Q: A 10 kg cart is pulled by a constant horizontal force of F. If the position of the cart is given by…

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Q: The horizontal surface on which the objects slide is frictionless. The acceleration of gravity is…

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Q: A box rests on a frozen pond, which serves as a frictionless horizontal surface. If a fisherman…

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Q: An electron of mass 9.11 x 10s! kg has an initial speed of 3.00 × 10° m/s. It travels in a straight…

A: Given that, The initial speed of an electron, u=3×105 m/s The final speed of an electron, v=7×105…

Q: A bowling ball of mass M1 = 6 kg is initially at rest on the sloped side of a wedge of mass M2 = 9…

A: Given: The mass (M1) of the bowling ball is 6 kg. The mass (M2) of the wedge is 9 kg. The slope of…

Q: The of the tension force of the string is: Choices: greatest in I greatest in II greatest in III…

A: For Equilibrum forces must be balanced

Q: An elevator, moving upward, decreases in speed from 8.41 m/s to 1.70 m/s in 2.02 s. Assuming…

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Q: A 2400 kg truck is towing a 600 kg trailer. If they move with an acceleration of 10 m/s2, the…

A: Given, Mass of truck,M=2400 kg Mass of trailer,m=600 kg Acceleration,a=10 m/s2

Q: An airboat with mass 960 kg, including the passengers, has a propeller that produces a driving…

A: Given Data:- Mass of the airboat is M=960 kg Force produced by the propeller is FP=1680 N Resistive…

Q: If the forces along the y-axis are equal in magnitude, what is the y-component of the acceleration?

A: in the question it is not mentioned which is the x-direction and which is the y- direction .now if…

Q: If a constant, nonzero force is applied to an object, what can you say about the velocity and…

A: A non zero force is applied on a body

Q: Block B has mass 6.00 kg and sits at rest on a horizontal, frictionless surface. Block A has mass…

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Q: As shown below, the mass of block 1 is m1 = 4.0 kg, while the mass of block 2 is m2 = 8.0 kg. The…

A: Mass of block 1 is m1 = 4.0 kg Mass of block 2 is m2 = 8.0 kg Coefficient of static friction between…

Q: Two blocks, each of mass m = 2.80 kg are hung from the ceiling of an elevator as in the figure…

A: Given  The mass of the block is m = 2.80 kg. The acceleration of the block is a = 1.1 m/s2. The free…

Q: The crate has a mass of 80 kg and is being towed by a chain which is always directed at 20° from the…

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Q: A box rests on a frozen pond, which serves as a frictionless horizontal surface. If a fisherman…

A: Using Newton's second law, F=mam=Fa

Q: Two forces act on a 56-kg object. One force has magnitude 65 N directed 59° clockwise from the…

A: The horizontal component of force on this case is The vertical component of force on this case is

Q: A box of mass m1 =10.0 kg rests on a smooth , horizontal floor next to a box m2=5.00 kg if you push…

A:

Q: A 2-ke block is pulled bya constant horizontal force of 10 N. If the coefficient of friction between…

A:

Q: A skydiver jumps out of a plane. She quickly accelerates to a constant velocity. Which statement is…

A: statement D is true . when skydiver fall downwards then its speed increase with time. Same air…

Q: Shown below is a 10.0 kg block being pushed by a horizontal force F of magnitude 217.0 N. The…

A:

Q: A fisherman is fishing from a bridge and is using a "32.0-N test line." In other words, the line…

A: Write a given value of this question. F=32.0N

Q: Shown below is a 10.0 kg block being pushed by a horizontal force F of magnitude 221.0 N. The…

A: Given:           mass(m) = 10 kg            Force (F) =  221 N           θ = 30°            μ=0.60…

Q: f half of the weight of a a small 1.80 ✕ 103 kg utility truck is supported by its two drive wheels,…

A: The maximum acceleration will be achieved when the force of static friction is maximum. The maximum…