The speed of a bobsled is increasing, because it has an acceleration of 3.42 m/s2. At a given instant in time, the forces resisting the motion, including kinetic friction and air resistance, total 659 N. The mass of the bobsled and its riders is 252 kg. (a) What is the magnitude of the force propelling the bobsled forward? (b) What is the magnitude of the net force that acts on the bobsled?

Q: Two masses (M1 = 7 kg and M2 = 12 kg) are connected by a wire that is wrapped around a cylindrical…

A: Given: M1=7 kgM2=12 kgM3=4 kgR=3 m The free-body diagram of the system is given bwlow.

Q: A flea jumps by exerting a force of 1.32 x 10 N straight down on the ground. A breeze blowing on the…

A: force exerted by flea = 1.32 x 10-5 N  down wardbut according Newtons third lawforce acting on flea…

Q: A physics student, in a stationary elevator, places a 250.0 g mass on an electronic balance. The…

A: Given  mass (m) =250.0 g balance reading (mb)=262.0 g Required acceleration of elevator (a)=?

Q: A crate (20 kg) is hung in an elevator by a cord rated to withstand a tension of 300 N. The elevator…

A: Consider the free body diagram of the system.

Q: An elevator with its occupants has a total mass of 1425. kg. The cable that allows the elevator to…

A: If an elevator with occupants of mass 'm' moving downward with acceleration 'a' then…

Q: A block of unknown mass m is sliding down a smooth inclined plane. A physics student uses a motion…

A: From the figure above, we can see that the acceleration of a block down the inclined plane, making…

Q: A husky is pulling a sled loaded with cargo (total mass m = 34kg) along some snow, which has…

A:

Q: Cynthia pulls horizontally on an old chest of drawers (m = 75.0 kg), sliding it across the floor.…

A: Given data: The mass of the chest of drawers is m=75.0 kg. The force of pull applied by Cynthia is…

Q: At launch a rocket has a mass of 3.66×104 kg, and the thrust of the engines is 5.34×105 N. If the…

A: Given  Mass of rocket,M = 3.66× 104 kg  Thrust, F = 5.34×105 N  Acceleration due to gravity,g = 9.81…

Q: Akash and Beth are on skateboards. Beth and her skateboard have a combined mass of 62 kg. Akash and…

A: Mass of Akash + skateboard = 150 kg  Mass of Beth + skateboard = 62 kg  Force applied by Beth on…

Q: The block has mass m = 6.8 kg, the ramp is at an angle of θ = 28 degrees, the coefficient of kinetic…

A: We have a mass of m=6.8 kg moving up a ramp at an angle 28o and the ramp has a coefficient of…

Q: While an elevator of mass 903 kg moves downward, the tension in the supporting cable is a constant…

A: It is given that, y=5 mt=4 sT=7730 NM=903 kg

Q: A friend claims that her car can accelerate from a stop to 60 mi/h (26.8 m/s) in 7.5 s, but the…

A:

Q: Two students are trying to move a heavy desk, mass = 43 kg, across a smooth floor by applying forces…

A:

Q: A

A:

Q: Find the magnitude of the force of tension in strings 1 and 2.

A: Given: A block of mass m is connected with two strings. String 1 makes an angle 60° with horizontal…

Q: Enter an expression for the acceleration of either block. 4. What is the numerical value, in…

A:

Q: A boy slides down a hill on a sled (total mass of 31 kg) and coasts onto a flat plain with a speed…

A: Given data The total mass of the boy and sled is m = 31 kg. The speed of the boy and sled is u = 6.5…

Q: wo blocks are connected by a string as shown. The inclination of the ramp is θ = 39° while the…

A: θ = 39° m1 = 7.8 kg m2 = 19.6 kg Friction is negligible. find a) Write an equation for the magnitude…

Q: A scale in the elevator’s floor measures the weight of the passengers, and it has the correct value…

A: Given, a situation where an elevator moves up with a constant speed of v=3.2 m s-1.   Recall that,…

Q: The head injury criterion (HIC) is used to assess the likelihood of head injuries arising from…

A: Let F denote the force, m denote the mass, aavg denote the average acceleration. Therefore,

Q: block of mass m1 = 38.4 kg on a horizontal surface is connected to a mass m2 = 15.2 kg that hangs…

A: Given:  m1 = 38.4 kgm2 = 15.2 kg

Q: (a) (b)

A: from fig. (a) 2T = mg2 (92.4) =m (9.8)m = 184.89.8 =18.85 kg

Q: 1) Let the elevator have a mass of 1,275 kg and an upward acceleration of 2.9 m/s. Find T. N s your…

A: Mass = m = 1275 kg

Q: Acceleration is sometimes expressed in multiples of g, where g = 9.8 m/s^2 is the acceleration due…

A: vi = 31 m/s2 vf = 0 m/s2 g =9.8 m/s2 t = 0.15 s

Q: A crate (20 kg) is hung in an elevator by a cord rated to withstand a tension of 500 N. The elevator…

A:

Q: Consider the folowing situation: A 2 kg box on an inclined frictionless table pulled up the incline…

A: Given data:  The given mass of the block, m=2 kg. The angle of the inclined plane, θ=15°.

Q: Air resistance has a quadratic velocity dependence. Water resistance usually has a linear velocity…

A: Air resistance has a quadratic velocity dependance. Water resistance usually has a linear velocity…

Q: If an object starts at x(0) = 0, v(0) = 1, and undergoes a constant acceleration a = -3 m/s^2, plot…

A:

Q: A box of mass 7.3 kg is slid along the floor. The initial speed of the box is 6 m/s and it comes to…

A:

Q: A flea jumps by exerting a force of 1.02 x 10 5N straight down on the ground. A breeze blowing on…

A: Data Given , Force straight down on the ground ( F1 ) = 1.02 × 10-5 N Force parallel to the ground (…

Q: A person weighing 879. N rides in an elevator that has a downward acceleration of 1.37 m/s2. What is…

A:

Q: The block has mass m = 10.6 kg, the ramp is at an angle of θ = 24 degrees, the coefficient of…

A:

Q: A boy has filled his toy box with all his favorite toys and it trying to drag it across the floor.…

A:

Q: A sled of mass 87 kg is being pushed up a slope with an applied force of 853 N. The slope is…

A: applied force = 853 N weight along incline = 87 * 9.8 * sin(34) = 476.77 Nfrictional force = 87 *…

Q: In procedure 2, you found the coefficient of kinetic friction by measuring the acceleration of a…

A: Required :: The change in the value of the coefficient of kinetic friction.

Q: Suppose we are told that the acceleration a of a particle moving with uniform speed ν in a circle of…

A: We consider mass [M] , length [L] and time [T] as fundamental quantities . Hence, The dimension of…

Q: Write an expression for the component of net force, Fnet,x, in the x direction, in terms of the…

A:

Q: While an elevator of mass 930 kg moves downward, the tension in the supporting cable is a constant…

A:

Q: A common graphical representation of motion along a straight line is the v vs. t graph, that is, the…

A:

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: