A 280-kg piano slides 4.3 m down a 30o incline and is kept, Ask an Expert

Academics

A 280-kg piano slides 4.3 m down a 30o incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effecitve coefficient of kinetic friction is 0.40.

a) the force exerted by the man
b) the work done by the man on the piano
c) the work done by the friction force
d) the work done by the force of gravity
e) the net work done on the piano

View complete question

Physics, Academics

Category:- Physics
Reference No.:- M9644201

Have any Question?Write your Review or question?

Related Questions in Physics

Question when striking the pike a predatory fish can

Question: When striking, the pike, a predatory fish, can accelerate from rest to a speed of 3.9m/s in 0.12s . a) What is the acceleration of the pike during this strike? Express your answer using two significant figures. ...

Question as shown in the figure there are 3 point charges

Question: As Shown in the figure, there are 3 point charges along the x-axis located at 3,8, and 11 cm. What is the x-component of the force on the charge located at x = 8 cm given that q = .85 uC in N? The response must ...

Question the resistivity of a wire is given by rpla where p

Question: The resistivity of a wire is given by R=pL/A. Where p is the resistivity of the material, L is the length of the wire and A is the cross sectional area of the wire. a) If the diameter of the wire is .35mm calcu ...

Question a rocket starts from rest and moves upward from

Question: A rocket starts from rest and moves upward from the surface of the earth. For the first 10s of its motion, the vertical acceleration of the rocket is given by ay=(3.00m/s3)t, where the +y-direction is upward. W ...

Initially at time t 0 a particle is moving vertically at 5

Initially (at time t = 0) a particle is moving vertically at 5 m/s and horizontally at 0 m/s. Its horizontal acceleration is 1.6 m/s2. At what time will the particle be traveling at 57? with respect to the horizontal? Th ...

Question what potential difference is needed to accelerate

Question: What potential difference is needed to accelerate a He+ ion (charge +e, mass 4u) from rest to a speed of 1.8 x 10 6 m/s? Express your answer using two significant figures. The response must be typed, single spa ...

Question a projectile is fired with an initial speed of

Question: A projectile is fired with an initial speed of 30m/s at an angle of60 deg above the horizontal. The object hits the ground 7.5slater. a) How much higher or lower is the launch point relative to thepoint where t ...

Question somebody on reddit posted a ridiculous picture

Question: Somebody on reddit posted a ridiculous picture today of a fly pierced onto a needle of a cactus: Whilst the OP claims the picture to be real, several people doubted the fly could ever reach enough momentum to a ...

Question the potential difference between the plates of a

Question: The potential difference between the plates of a parallel plate capacitor is 35V and the electric field between the plates has a strength of 750V/m. If the plate area is 4.0 x 10 -2 m 2 , what is the capacitan ...

Propane boilers are a common technology for domestic

Propane boilers are a common technology for domestic heating, and have a typical energy efficiency of 90%. The chemical formula of propane is C 3 H 8 , its lower heating value is 50,400 kJ/kg, and its carbon content by m ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Physics Expert