A balloon floats motionless in the air . A balloonist begins climbing the supporting cable. In which direction does the balloon move as the balloonist climbs? Defend your answer.

Q: The 62.0 kg athlete as seen in the figure hangs from a 3.00 m long horizontal bar. The athlete is…

A: Mass=62 kg L=3m       Fig 1: FBD of the question

Q: Five forces are acting on the cantilever beam AB. Find the resultant or a couple acting on the…

A: Given,five forces acting on cantilever beam and creating couple five forces are 1000, 1400, 800, 500…

Q: An octopus uses one sucker of diameter 2.86 cm on each of the two shells of a clam in an attempt to…

A:

Q: A post is supported by a guy wire which exerts a pull of 100N on the top of the post. If the angle…

A: The free-body diagram of the guy wire with the post is shown below.

Q: The system shown in the diagram is in equilibrium. The object hanging from the end of the strut S…

A: Given,             Mass of the block, M = 513 kg             Mass of the strut, m = 107 kg

Q: Calculate the net force being applied to the objects. Include SIZE and DIRECTION. 5 N 2N 52 12 N< 3N…

A: Let the forces acting on the object are,   F1=+10N       (positive sign indicates direction to the…

Q: Quadriceps tendon Femur Patella 0-42 Patella tendon

A:

Q: kg are suspended as shown, where strings AB and BC are horizontal, and BD is inclined 30° to the…

A:

Q: A mass m is suspended from the ceiling by two strings that each make an angle 6 as shown. What is…

A: First we have to resolve the tension force in the rope into it's orthogonal components i.e T…

Q: The figure shows a person whose weight is W = 782 N doing push-ups. Find the normal force exerted by…

A: Given:- Weight of the person is W=782N.   Suppose the normal force exerted by the floor on hand is…

Q: Cables A and B supports the 50-pound load, as shown in the figure. What is the force exerted by…

A:

Q: Consider the figure below. 45.0° 45.0° 60.0 N 60.0 N (a) What is the resultant force exerted by the…

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Q: What is the shortest length of wire L that can be used to hang the mirror without the wire breaking?…

A:

Q: During the downward portion of a biceps curl the velocity of the dumbbell is held constant. If the…

A:

Q: There are two propellers in a helicopter. Why?

A: If only one motor is mounted on helicopter then helicopter will turn in opposite direction for…

Q: A person supports himself on the ball of one foot. The normal force N=724 N pushes up on the ball of…

A:

Q: Can an object be in equilibrium when only one force acts or Explain.

A: Object will be in equilibrium when the forces are balanced, that is the sum of all the forces that…

Q: The lamina shown is a quarter circle with radius 4 cm and mass M kg. Find the angle that AB makes…

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Q: Stand facing the edge of an open door, one foot on each side of the door. You will find that you are…

A: When facing the edge of the door and attempting to stand on your toes, there must be a forward shift…

Q: Situation 1. The wheel barrow at rest containing stones has a force of 1000 N. A man exerted a force…

A:

Q: Consider a 681 N cat burglar supported by a cable as in the figure. 37.7 Find the tension in the…

A: To determine,The tension in the inclined cable.and Tension in the horizontal…

Q: The lateral head and the medial head of the gastrocnemius muscle pull on the Achilles tendon, as…

A:

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.