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: 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…

A:

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: 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: 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…

A:

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

A:

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…

A:

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

A:

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…

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.