The exercise hand- grip, shown to the right, is an example of: (a) a 1st-class lever. (c) a 3rd-class lever. (b) a 2nd-class lever. (d) none of these. fulcrum
Q: What is a lever? State its principe?
A: Lever can be defined as
Q: What is a condition of equilibrium? How do we know we've reached a state of equilibrium?
A: A solid body submitted to three forces whose lines of action are not horizontal is in equilibrium if…
Q: If energy is never lost, why does the basketball you dropped eventually stop bouncing
A: Energy does not lost during bouncing.
Q: levers are classified into three classes according to muscle force All fulcrum point weight
A: Levers are classified into three classes. These are given as, Class 1 Class 2 Class 3
Q: Why Friction is important?
A: Friction
Q: In order to prevent muscle contraction from misaligning bones during healing (which can cause a…
A:
Q: When you lift an object by moving only your forearm, the main lifting muscle in your arm is the…
A: Given mforearm = 1.8kg dball =35 cm Wball = 44.5N dbiceps = 2.50cm
Q: Scissors are like a double lever system. Which of the 2 levers a fulcrum ( nail puller) or a wheel…
A:
Q: What is meant by a rigid body?
A: In physics, a rigid body (also known as rigid object) is a solid body in which deformation is zero…
Q: What will happen to a moving object when an unbalanced force acts on it?
A: A moving object may have a constant velocity or a varying velocity.
Q: Both a pair of scissors and a pair of pliers belong to the same class of levers, Name the class of…
A: A pair of scissors and a pair of pliers both belongs to class 1 lever.A pair of scissors has…
Q: Calculate the mass m needed in order to suspend the leg shown in (Eigure 1) . Assume the leg (with…
A:
Q: Why does bending your legs when running enable you to swing your legs to and fro more rapidly?
A: Rotational inertia is the resistance to a change in rotational motion, which is similar to plane…
Q: arts his swing from rest ove the bottom of his ion exceeds T = 950 N. Does the vine break? If the…
A: Tarzan whose weight W = 688 N The length of the vine L = 18 m The height of h = 3.2 m The vine…
Q: For the pulley system shown, what is the upper limit of weight the strong man can lift?
A: Given: A man lifts a weight by a pulley
Q: a ball is just supported by a string without breaking. If it is set swinging, it breaks, why?
A: When a ball is tied to a string, it is free to do only circular motion with the help of the string.…
Q: The bar is 10m long. A mass of 40kg placed at 9m from left end of the bar. Where should a 60kg mass…
A:
Q: What will happen to an object at rest when an unbalanced force acts on it?
A: According to Newtons 1st law, if a object is at rest or in uniform motion will remain in rest or in…
Q: How are Newton's laws and the law of conservation of energy very important?
A: Newtons laws of motion are foundation of classical mechanics. Newton's laws of motion used to solve…
Q: When we lift or push something , our body muscles exert forces. Are these forces conservative.
A: When we lift or push something our muscles exert forces, these forces are not conservative.
Q: Why is a massive cleaver more effective for chopping vegetables than an equally sharp knife?
A: A massive cleaver is a more appropriate/effective choice for chopping vegetables is because it has…
Q: What is the advantage to a gymnast of beung short in stature?
A: The centre of gravity of a person having short stature is closer to the ground than that of a taller…
Q: what is mutual force
A: Force is a vector quantity which has both directions and magnitude .
Q: Why does a body regain its shape and size when deforming forces are removed?
A: Body regains the original shape after the removal of applied force is because of the restoring…
Q: In raising a 5000-N piano with a pulley system, the workers note that for every 2 m of rope pulled…
A: The equation for the work done is given by,
Q: The three cups are rolled on a level surface. Rank the cups by the amount they depart from a…
A: From the given diagram, the amount they depart from the straight line path is clear.
Q: What is a gyroscope and how is it used as a navigational aid?
A: A gyroscope is a device which spins at high speeds and which maintains its spinning axis on the same…
Q: Suppose the student in the figure is 62kg, and the board being stood on has a 14kg mass. What is…
A:
Q: A Child In A Merry-Go-Round Press Presses The Side Of His Seat Radially Outward. Why?
A: This is because of centrifugal force acting radially outwards on the child actually rotating in the…
Q: What is the advantage to a gymnast of being short in stature?
A:
Q: Nobody at the playground wants to play with the obnoxious boy, so he fashions a seesaw as shown so…
A: The picture shows the boy sitting on the board with the fulcrum being extremely close to him and…
Q: When a rope is wrapped around a wheel (or pulley) and pulled, the lever arm is the ________ of the…
A: The liver arm is the perpendicular distance from the axis of rotation to the line of action of the…
Q: Why is it advantageous to roll with the punch in boxing?
A: The impulse is the change in momentum of the object that acts upon it.
Q: When a bowling ball leaves your hand, it may not spin. But farther along the alley, it does spin.…
A: Torque is a measure of the force that can cause an object to rotate about an axis Torque is a vector…
Q: You know two forces are balanced if the net force is.....
A: Two forces are balanced means both forces have same magnitude and opposite direction. According to…
Q: against which it can push?
A: Rockets and engines in space work according to Newton's third law of motion i.e Every action has an…
Q: How does inertia play into most aspects of life ?
A:
Q: What are combining forces?
A:
Q: What is the benefit of an airbag, according to your understanding of physics?
A:
Q: What is the use of spring balance?
A: A spring balance measures the weight of an object by opposing the force of gravity acting with force…
Q: for every action force, there is which of the fallowing?
A: For every action, there is a reaction force.
Pls help ASAP
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- Can you break down the buttom where it comes up with 63 degrees? How can I enter this into a calculator to get the correct answer?. Give two everyday examples of objects that are not in static equilibrium.Hang a weight m = 30 g on the left side of the lever at the 5 marks. At which mark on the right side of the lever must a second weight m = 20 g be placed so that it remains horizontal? (mark 5 means 10 cm away from thr center).
- A rider of mass 73.0-kg sits 1.40 meters left of the pivot point. A different rider sits 3.4 meters to the right of the pivot point. If the see-saw is in equilibrium, what is the rider on the right's mass? Consider the mass of the see-saw to be negligible. Give your answer in kilograms to 3 significant figures (1 decimal place).If the torque required to loosen a nut on the wheel of a car has a magnitude of 40.0 N•m, what force must be exerted by a mechanic at the end of a 30.0 cm wrench to loosen the nut? Remember to convert cm to m!A nonuniform, 80.0-g, meterstick balances when the support is placed at the 51.0-cm mark. At what location on the meterstick should a 5.00-g tack be placed so that the stick will balance at the 50.0 cm mark?
- An object is subjected to three forces as shown in the figure. Assume F1 = 50.0 N and F2 = 95.0 N, what is T if the object is in static equilibrium? Enter a number with three significant digits.A kawayan is 6.0m long and weighs 80 N. It is supported at its center. Anadditional 160N weight is now placed on its left end. To maintain balance, the support mustbe moved by ______ to the left. Choices: 6.0m 2.0m 1.5m 0.50m 1.0m Show complete solution and free body diagramIf the forces on the beam are replaced by an equivalent Force-Position system, determine the distance d where the resultant force must be placed. F = 58 N, P = 97 N, Q = 18 N, a = 1.5 m, b = 1.5 m and c = 1.9 m.
- A rider of mass 77.0-kg sits 1.60 meters left of the pivot point. A different rider sits 3.3 meters to the right of the pivot point. If the see-saw is in equilibrium, what is the rider on the right's mass? The mass of the see-saw is 18.9-kg Give your answer in kilograms to 3 significant figures (1 decimal place).A thingamajig initially 5.00 m, 90.0° from a three-pronged widget is displaced 4.00 m, 180.0°. What is the thingamajig's final position relative to the three-pronged widget?Approximately what magnitude force, FM, must the extensor muscle in the upper arm exert on the lower arm to hold a 4.3-kg shot put (Figure 1)? Assume the lower arm has a mass of 3.0 kg and its CG is 13 cm from the elbow-joint pivot.