A block placed on a horizontal surface is being pushed by a force F making an angle 0 with the vertical. If the friction coefficient is u, how much force is needed to get the block just started. Discuss the situation when tane < H.

Q: A box of mass 7.5 kg has an initial velocity of vi down an inclined planed that is at an angle of…

A: Given Data: The mass of a box is, m=7.5 kg The angle of inclination is, θ=17° The coefficient of…

Q: A locomotive of mass m starts moving so that its velocity varies according to the law v = aV s,…

A:

Q: F X m A force |F] = 30 N is applied to the object with mass m - 2 kg. The angle theta 25 degree. The…

A: Given: force (F) = 30 N mass (m) = 2 kg θ = 25odisplacement (d) = 2 m coefficient of kinetic…

Q: The figure shows a double-ended slide track. A small block can slide along the track and move up and…

A:

Q: (a) Calculate the force needed to bring a 1100 kg car to rest from a speed of 90.0 km/h in a…

A: mass of car = 1100 kg initial speed = 90km/hr  = 90 * 5/18  = 25 m/sfinal speed = 0 m/sdistance =…

Q: A fighter plane is in a steep climb such that the angle between the direction of the climb and the…

A:

Q: The block shown has a velocity va = 25 m/s at A and a velocity va = 15 ms as it passes point B on…

A: Given: Initial velocity of block at point A vA=25 m/s. Velocity of block at point B vB=15 m/s.…

Q: A box of mass 7.5 kg has an initial velocity of vi down an inclined planed that is at an angle of…

A:

Q: What is the potential energy of an 800 kg elevator at the top of the Empire State Building 380…

A:

Q: A power specification formula is to be derived for electric motors which drive conveyor belts moving…

A: The mass flow rate (m) can be converted to its value (say m1) in the SI unit (kg/s) as follows:

Q: A block of mass m is moving with a constant acceleration 'a' on a rough horizontal plane. If the…

A:

Q: Truck suspensions often have "helper springs" that engage at high loads. One such arrangement is a…

A:

Q: (b) Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.00…

A: (a) Given that Mass of car(m) =800kg Speed( v) =85 km/h=85*5/18 m/sec Distance( d) =125m

Q: As shown in the figure below, a 2.25 kg block is released from rest on a ramp of height h. rough…

A: Given ;-  The mass of the block is m = 2.25 kg  The coefficient of friction μ= 0.510  The distance…

Q: Find the work done by a force of constant magnitude F=0,1KN.If the displacement of the body is…

A: Given data: Force, F=0.1 kN = 100 N Displacement, r=100 mm =100×10-3 m = 0.1 m Angle between…

Q: During a jump on a K-195 ski-jump hill, the skier may leave the ground traveling at about 25 m/s…

A:

Q: If the four Pratt & Whitney PW4000 turbofan engines of a Boeing747-400 aircraft do 5.62 Million…

A:

Q: A 19.8 kg block is dragged over a rough, horizontal surface by a constant force of 183 N acting at…

A: Work done by the frictional force is,

Q: As shown in the figure below, a 2.25 kg block is released from rest on a ramp of height h rough…

A:

Q: What is the current total mechanical energy of a 70-kg skydiver whose speed is 62 m/s at an altitude…

A: The kinetic energy of a body of mass m and speed v is given by, K = 12mv2 The potential energy for…

Q: As shown in the figure below, a 2.25 kg block is released from rest on a ramp of height h. 가 rough…

A: Mass of the block is Length of the rough path is Coefficient of kinetic friction is Block's speed…

Q: A weight W is accelerated from rest by a constant force, G, through a distance d across the…

A: Given:- weight of the object W  Force G is applied at the distance d  After d distance floor with a…

Q: (4) Need to know the weight of the block to answer. (5) Need to know the coetficient of friction a,…

A: The equation for the work done is,

Q: As shown in the figure below, a 2.25 kg block is released from rest on a ramp of height h. rough p…

A:

Q: The strength of Earth's gravity at ground level = 9, point, 8, N, k, g, to the power minus 1…

A: Given data, Mass of the bridge span = 100 tons Mass of the bus = 30 tons Length of the bridge = 200…

Q: How much force is required for the elevator to reach the top floor with a height of 140m and do…

A:

Q: Two equal 2.00 kg mass blocks are attached by a cable and each block has an nitial kinetic energy of…

A:

Q: A box of weight w = 2.0N accelerates down a rough plane that is inclined at an angle ϕ=30 degrees…

A: weight (w)= mg = 2 N ϕ = 30oNormal force (N) = 1.7 N Coefficient of kinetic friction =…

Q: 4kg block was released from rest on top of a quarter circular surface. If the vertical height from A…

A: Mass = 4 Kg Distance between BC = 10 m Height from A to ground= 4 m

Q: Find the mass (in kg) of the black that a 40HP engine can pull along a level road at 15m/s if the…

A:

Q: A box is resting on an incline (40 degree angle incline) and this incline has a coefficient of…

A: The initial height at which the box was initially at rest is calculated by using the trigonometric…

Q: A box of mass m = 9.3 kg is released from rest at the top of a track that is frictionless except for…

A:

Q: A skydiver with a mass of 50 kg has reached the typical terminal velocity of 30 m/s. The drag force…

A: To solve the given question, we need to calculate the power dissipation by the resistive force.

Q: If you have an object moving along a rough surface (one in which kinetic friction is a significant…

A: Given data: The kinetic friction is acting on the object Required: The kinetic energy is conserved…

Q: As shown in the figure below, a 2.25 kg block is released from rest on a ramp of height h. rough…

A: Given: d = 15 cm = 0.15 m v = 3.80 m/s u = 0.770 To find: h = ?

Q: m h a Determine the speed that mass m must have so that when it reaches the height of h, it has half…

A: Given    speed that mass m must have so that when it reaches the height of ha , it has half its…

Q: A 50-lb cylinder rests against a wall and a plate as The coefficient of friction is the same shown…

A:

Q: As shown in the figure below, a 2.25 kg block is released from rest on a ramp of height h. rough…

A: Given Mass of object (m) = 2.25 kglength of rough patch (s) = 15.0 cm = 0.150 mμk = 0.690.velocity…

Q: After given a push, a 1.0-kg box slides down a slope that is inclined by 30◦ relative to the…

A: Given that, mass of the block is m=1kg the angle of the inclined plane with horizontal is θ=30o the…