3-15  A pen plotter imparts a constant acceleration of 2.5 m/sec2 to the pen assembly, which travels in a straight line across the paper. The moving pen assembly weighs 0.5 kg. The plotter weighs 5 kg. What coefficient of friction is needed between the plotter feet and the table top on which

Q: In Fig. 3-19, the weights of the objects are 200 N and 300 N. The pulleys are essentially friction-…

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Q: An elevator weighing 5.8 kN in ascending with an acceleration of 3 m/s2 . The operator is standing…

A: Weight of elevator = 5.8 kN   = 5800 N Upwards acceleration (a) = 3 ms2

Q: A hoist of mass 4 tonnes is hauled vertically upwards by a cable and covers a distance of 3.2m in 4…

A: Given Data:Mass(m) = 4 tonnes = 4000 kgDistance(s) = 3.2 m Time(t) = 4 secUsing Kinematic equation…

Q: Using a rope that will snap if the tension in it exceeds 357 N, you need to lower a bundle of old…

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Q: find the tension and acceleration of the system

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Q: A 85 kg cart is accelerated horizontally by a 193-N force pulling at an angle of 27 degrees above…

A: The objective of the question is to determine the acceleration of the cart when a force is applied…

Q: A box has a mass of 67 kg, a force of 91 N is applied to it at an angle of 45º, an object moves on a…

A: To solve this problem we have to make free body diagram

Q: A pendant is hanging from a car rear view mirror.  If the car accelerates at 1.7 m/s2, determine the…

A: The car's acceleration can be given as, a=1.7 m/s2 The pendant's free-body diagram is shown below.…

Q: A pendant is hanging from a car rear view mirror. If the car accelerates at 1.7 m/s2, determine the…

A: a = 1.7 m/s2resolving the components of the tension force , we get mgSinθ = ma

Q: Compute the normal acceleration when he reaches the bottom of the profile.   Draw FBD and show…

A: Given:mass of the man, m = 67.50 kgvelocity equation, v2 = 20×6.33-y  m2/s2equation of the curve, y…

Q: An athlete whirls a 6.41 kg hammer tied to the end of a 1.3 m chain in a simple horizontal circle…

A: Mass of the hammer 6.41 kg  Length of the chain 1.3m  The Angular velocity 1.64 rev/s

Q: The parachute on a race car of weight 8 820 N opens at theend of a quarter-mile run when the car is…

A: Given:Weight of the race car of the parachute = 8820 NInitial velocity = 35 m/sFinal velocity = 0…

Q: Al 56 Cu A 2.00 kg aluminum block and 6.0 kg copper block are connected by a light string over a…

A:

Q: A toy car slides down a ramp 11.0m long inclined at 26.40°. Assume coefficient of kinetic friction =…

A: Given            acceleration, a =  1.70 m/s²            final velocity,  v =  7.89 m/s…

Q: A car is travelling at 50.0 km/h on a flat highway. (a) If the coefficient of frictin between road…

A: Given :  vo = 50.0 km/h = 50.0(1000/3600) = 13.9 m/s v = 0 m/s (because finally the car stops)

Q: Someone always park a car on an inclined plane drive way. On snow, when she parked the car, the car…

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Q: The 84-lb crate is carefully placed with zero velocity on the incline. What is the acceleration of…

A: Given: Mass of the crate = 84-lb Static friction coefficient μs =0.29 Kinetic friction coefficient…

Q: A traveler pulls on a 25 kg suitcase strap at an angle 36° above the horizontal. If the suitcase…

A: Given data:  Mass (m) = 25 kg Angle (θ) = 36° , above the horizontal  Initial velocity (u) = 0 m/s…

Q: A box is sitting on an inclined surface. The angle of the plane is 20 degrees, and the mass of the…

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Q: Two persons manage to push a motorcar of mass 1200 kg at a uniform velocity along a level road. The…

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Q: W A gray car with a mass of 1500 kg, a wheelbase length (1)of 2000 mm and a wheelbase width (w) of…

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Q: Kinetic Coeff. Friction = 0.33 Mass m1 = 25.6 kg Mass m2 = 48.5 kg Mass m3 = 144 kg Find the…

A: THE FORCE OF KINETIC FRICTION IS GIVEN AS: Fk= μkN ----(1)WHERE  μk= COEFFICINT OF KINETIC FRICTION…

Q: a 331N crate resting on a plane inclined 31 degrees with the horizontal requires a 20.2N force to…

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Q: Given: 25 kg, m2 12 kg, 01 = 42°, 02= 22°, µk1 = mị 18, µk1 = 0. 12 m2 mi UKI UK2 02 a) Find the…

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Q: A ramp with friction is inclined at 32.0◦ with respect to the horizontal. If the acceleration down…

A: Given: The angle of the inclination is 32o. The mass of the object is 5 kg. The acceleration of the…

Q: An Olympic skier moving at 26 m/s down a 280 slope encounters a region of wet snow of coefficient of…

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Q: What is the acceleration of a 11 kg block down a frictionless incline, inclined at theta - 68…

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Q: A box rests on the (horizontal) back of a truck. The coefficient of static friction between the box…

A: The truck's maximum travel distance in 3.0 seconds without the box sliding must be ascertained.

Q: 2-96. Four forces are applied at a point in a body as shown in Fig. P2-96. Determine the magnitude…

A: Consider the diagram showing the resolution of F1 as shown below:     Here, α and β are the given…

Q: The acceleration due to gravity on Earth differs slightly from place to place, depending on…

A: Consider the graph between the velocity and the time. Since the metal ball is dropped from the rest,…

Q: Express the following quantities in SI units:  23.4 grams = 2.34 x 10^-2  124 millimeters =  1…

A: Given quantities: 23.4 grams = 2.34 x 10^-2  124 millimeters =  1 hour and 24 min =   0.12…

Q: 2. Determine the acceleration of the system. Neglect force by air and friction force. 20N %3D Fa m1…

A: The mass of block-1 is given as, m1 = 15 kg The mass of block-2 is given as, m2 = 5 kg The pushing…

Q: The figure shows an overhead view of a 0.022 kg lemon half and two of the three horizontal forces…

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Q: 2-38. Express each of the three forces acting on the support in Cartesian vector form and determine…

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Q: 100 N %3D 1 60° 30°

A: Component of a vector along x axis = A cos θ Component of a vector alone y axis =A sinθ

Q: A man steps outside one winter day to go to work. His icy driveway is 8.0 m long from top to…

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Q: (1) The drill exerts a 32 N-m couple on the plywood sheet during operation. What are the minimum…

A: Given that,  The drill exerts a couple, M= 32 Nm Minimum parallel and opposite forces applied on the…

Q: If block A is intended to move vertically at a constant rate of 3.96m/s, determine the rate (m/s) at…

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Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.